package com.chaoyer.cynet.common.help;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;


/*
* spring容器 获取bean工具类
* */
@Component
public class SpringHelper implements ApplicationContextAware {

    private static ApplicationContext applicationContext = null;

    @Override
    public void setApplicationContext(ApplicationContext ac) throws BeansException {
        if (applicationContext == null) {
            applicationContext = ac;
        }
    }

    /*
    * 获取applicationContext
    * */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /*
    * 通过beanName 获取 Bean
    * */
    public static Object getBean(String beanName) {

        return getApplicationContext().getBean(beanName);

    }

    /*
    * 通过class获取Bean.
    * */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /*
    * 通过name,以及Clazz返回指定的Bean
    * */
    public static <T> T getBean(String name, Class<T> clazz) {

        return getApplicationContext().getBean(name, clazz);

    }

}